Truck bolster



A. J. CANFIELD AND E. R. VIBERG.

TRUCK HOLSTER.

APPLICATION FILED Nov. 23. 1920.

1,403,588, Patented Im-1.111922.

32 Il I 27 26a $3/ 33 A c 282 135g F/6 5 56.7/2 /2 f 1.2A $5/ 2,@

/m/emo/J UNITED STATES PATENT .oEFica- ARTHUR .'r. CANEIELD AND ERNEST n. vienne, or MONTREAL, QUEBEC, .Carmina TRUCK Bons'rE'R.

Application led November 23, 1920. Serial No. 425,974.

T0 all whom t may concern.'

Be it known that we, ARTHUR J. CAN- FIELD, a citizen of the United States of America, and ERNEST R. Vienne, a subject of the King of Great Britain, and both residents of the city of Montreal, in the Province of Quebec and Dominion 'of Canada, have invented certain new and useful Improvements in Truck Bolsters, oi which the following is a full, clear, and eXact description. y l

This invention relates to improvements in railway car truck holsters, and the object of the invention is to provide a bolster of'simpliied construction and increased strength.

A further object is to provide a bolster constructed as nearly as possible altogether Y of pressed parts. A

A still further object is to provide a bolster in which the centre plate and side bearings are an integral part of the bolster formed in one'piece with the main member of the'bolster. Y

The invention resides briefly in providing a'bolster having the compressionl member thereof pressed of a single piece and preferably including the centre and side bearings. The tension member of the bolster may be a pressing or may be an ordinary channel of suiiicient width to receive be- 'tween its flanges the ends of the compression' member and adapted at its ends to be lapped over the ends of theV compression member.

In the drawings which illustrate the invention;-I f

Fig 1 is a plan view oi a bolster formed according to this invention. f

Fig. 2 is a side elevation of the bolster kpartly in vertical longitudinal section.

Fig. 3. is a view showing at the left hand side a cross section at the centre of the bolsterand at the right'hand side a cross section -on the line 3-3, Figure 2.

ings, 11 designates the compression member and 12 the tension member of abolsten The compression member` is, roughly speaking, channel-shaped in cross section but Iis of increasedwidth intermediate its ends tobaccornmodate the raised annulus 13Y constituting the centre bearing.` compression member is decreased toward the ends, as shown .at 14, so thatthe endsoilthe member may be received between the anges of the channel-shaped tension member-12 where' the two members converge and so that the top or web of the compression member will lie at the ends of the bolster approximately at the same level as the edges of the compression member anges.

Thefdepth, of the Specification of Letters l'Patent. rPatented Jn, 17, 1922, I

Intermediate the-centre andends, the com- At this point, atiller 17 is provided between thecompression yand tension members and may be connected tothe compression membei' by the same rivets which connect the side bearing 16. To give stiffnessto the compression member, a suitable numbe1 of ribs 18 are struck up from the surface thereof eX- 'tending in.decreasingheight from the centre bearing 13 substantially to the ends and intersecting the transverse rib 15 forming `the side bearing. .f

It will be noted that both the compression and tension members are somewhat of the pan or bath-tub type, that is to say, they are closed at the ends by walls 19 `and 2O Yrespectively extending between the webs thereof. The end walls 19 offthe compression member abut the end walls 20 oi the `tension V member. In making up the bolster, the end walls 2O of the compression member may-be of greater depth Vthan `the side walls, as in Adicated-at 20a, Figure 2, and after the com-l pression member is in place,fthis end wall may be pressedor forged down over the end of the compression member to increase the security with which the compression member is seated in vand against the end of .thetension member.` l f Y f iA. spring seat .21 is provided extending underthe end of the compression member and upwardly outside. theA end thereof, the

55 `engaging the compression member. The

i may `be `and integral therewith instead plane of this seat being at an angle Vto the plane of the tension member, as clearly shown, and the Wedge-shaped4 spacebetween the tension member and seat being occupied by a liller 22. The Vsame rivets 23 which hold the compression 'and tension member ends together also holdV the outer end of thev spring seat, While the inner end of the spring seat is held b the same rivets 24 which assist in holding t e filler 17. Additionalrivets rovided if desired to secure the filler 17. ertioal bearings or shoes 2,6 are attached adjacent the ends for engagement With the truck side frame. An aperture 27 is provided near the end of theV compression member to enable the insertion or heading of the` various rivets around the end oi:` the bolster.

. The king post 28 holding lthe compression and tension members apart at their centres is preferably a casting provided. with a tubu- [lar neck 29 to receive the ,king pin and extending through an aperture `30 in the compression member. y The king post itself comprises a pair of spaced side plates 31 connected by top and bottom plates 32,

which are stiff'ened and bracedby Webs 33. Theking post is designed to fit snugly 1 between the Webs of both compression and tension members and is thereby held against lateral movement without placing reliance upon the engagement of the bearing member 29- in the compression member.

In theform shown in Figure 5 the construction ofthe compression member is similar with that already described., with the principal exception that the aperture 30 is sur` rounded by an integral upstanding Wall or flange 34,\which forms a bearing for the king pin. It will be noted in Figure 2 that the depth off the Webs of the compression member increases from the centre toward the ends, whereas in Figure 5 the depth of the Webs is uniform. The tension memberA is of the same construction shownin Figure 2, with the exception that it tapers from the centre toward the ends and lacks the bent over portion 20a shown in Figure 2. The spring seat 21 is rovided with an upset portion or boss 35 W ich bears against the underside ofthe tension member and replaces the filler shown in'the other construction. The king kpost 28 differs from the king post shown in Figure 2, ini'that 1t lacks t e upwardly projecting neck 29 holding effect of this neck is performed by an upt'urned annular flange 36 which erigages `in the recess37 on the under side of the compression member produced by the formation of the annular rib 13. Another diiference resides in the bearings 26'L which are lugs turned up from the spring seat 21a .of Aseparate members as inFg. 2.

and a support for said The compression member including the centre bearing 13 and side bearings 15 is pressed from a single piece of metal, While the tension member is similarly pressed from asingle piece of` metal. The location and formvof the various parts is such that they may beconnected together with a minimum number of rivets, thereby greatly reducing the labor cost in vmanufacturing bolsters. All parts of the bolster being forged or "pressed from plates or rolled sections coinbine great strength With light Weight. The

tudinal reinforcing ribs extending between said bearings. i

members of channel section, the ends of the compression member being embraced by the ends of the tensionmember,` and end plates closing theA ends of the compressionV 2. In a bolster, compression and tensionabutting against the ends of the `tension member and spring seats under the tension member overlapping the ends thereof, and a rivet connecting adjacent ends of the compression and tension members and the adjacent spring seat together.l l

4. Ina bolster, compression and 'tension members of channel section arranged faceto face, a corrugation on the compression member forming a side bearing seat, a ller between the members fitting into the concave under surface of the seat, a side bearing, and a rivet holding said side bearing and filler to the compression member. Y

5. In a bolster, compression and tension members, the tensionmember being inclined from the centre toward the ends atan angle to the horizontaha springseat secured under each end of the tension member and located in a substantially horizontal plane whereby a Wedge-shaped space is formed, seat located in Vsaid space.

6. In a bolster, compression and tension members of channel section arranged with their concave sides facing, and a strut j.

solely by interengagement With the memthe opening in the compression member and bers. holding the strut in position.

7. In a bolster, compression and tension In Witness whereof, We have hereunto set 10 members, the compression member having our hands. 5 an openinor in its lower surface, a strut spacing said members apart at their centres, ARTHUR J. CANFIELD. and a projection from said strut entering ERNEST R. VIBERG. 

